What is photroprism?

What planet is so big it could fit all the other planets in it? What is a sentence for air mass? How often does the moon come between the earth and the sun? Who is the greek god or godiss of the sun? What does the term lunar mean? If you want to become an astronaut can you have tattoos? Why is the atmosphere cooler higher up? What type of noun is eye? Is there a list of space words that begin with the letters A to Z? Who is Orion Samuelson? Who was the discoverer of argon? What does the ionosphere do to microwaves? What is Apollo's twin name? What would be a problem with using kites to gather weather data? How do the dome mountains form? What does it mean when mercury beds into tiny balls? What is the significance of the crescent at the bottom of the moon? How do you clean paper blinds? What hemisphere is pointing towards the sun in late December? How does rain appear?